ADVANCE FOR USE MONDAY, OCT. 22, 2012 AND THEREAFTER - FILE - In this Wednesday, Oct. 3, 2012 file photo, Calvin Goad watches the first presidential debate between President Barack Obam

 

              ADVANCE FOR USE MONDAY, OCT. 22, 2012 AND THEREAFTER - FILE - In this Wednesday, Oct. 3, 2012 file photo, Calvin Goad watches the first presidential debate between President Barack Obam
ADVANCE FOR USE MONDAY, OCT. 22, 2012 AND THEREAFTER - FILE - In this Wednesday, Oct. 3, 2012 file photo, Calvin Goad watches the first presidential debate between President Barack Obama and Republican presidential nominee Mitt Romney from a restaurant in San Diego. In the sheer quantity of negative advertising and amount of dollars being spent, 2012 may mark the birth of an unprecedented era of negative campaigning, according to political scientists and campaign watchers. Contributing to the atmosphere is our extended campaign cycle of today, in which the barbs start flying long before the post-convention, fall campaign. (AP Photo/Gregory Bull)